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I'm trying to use photorec to recover some videos, but every time a file is found (a corrupt file actually), the search goes to back to sector 0, and the completion time jumps to something like 500h. also the pass 0 never goes through the whole hdd, it skips to pass 1 at around sector 190461804/10610098176 even though no headers were found. its this behavior normal? I left photorec running for almost 40h, it found around 100 small mpg files, all corrupt.
I'm running photorec on a LVM of 5059GiB, does this exceed the maximum "partition" size?
I'm using photorec 7.0 on archlinux.

Hi, thanks for the reply.
I compiled the 7.1-WIP version, and the same thing is still happening.
here is a video I recorded showing what is happening: https://www.youtube.com/watch?v=GgNiNthyQiA . you can skip to 12:45 to see the search going back to the start.
by the way i'm using Linux 4.4.3-1-ARCH

also, does selecting only 1 file format makes the search less likely to return results, or less likely to guess the block size correctly?

Yes, it's better to only disable a filetype if there is a problem with it:
- it's harder to detect the block size when most filetype are disabled,
- recovered files are larger than they should as PhotoRec stops the recovery of a file when a new one is found, and less files are found when few filetypes are enabled